Modified dapped end, precast prestressed double-tee slabs were considered in this research. It can facilitate insertion of service ducts at the dapped ends. The total depth of the floor slab may be reduced. In addition, the underside of the double-tee slab showed simpler appearance. Static three-point shear loading test was performed on full-scale specimens. And three modified single-tee slabs were analyzed by strut-tie model method. The specimen failed during the test in the same location as predicted by the strut-tie analytical model. The analysis of experimental results in comparison to the analysis results revealed that the experimental failure loads manifested 108% of analytical failure loads on the average.

1. 서 론
 2. 개량 싱글티 슬래브 실험체
  2.1 사용재료
  2.2 실험체 ST-1
  2.3 실험체 ST-2
  2.4 실험체 ST-3
  2.5 실험체 비교
 3. 실 험
  3.1 실험방법
  3.2 실험결과
 4. 해 석
  4.1 트러스 모델링
  4.2 스트럿 폭의 결정
  4.3 해석결과
 5. 결 론
 ACKNOWLEDGMENT
 REFERENCES

• 주호성(동국대학교 건축공학과 대학원생) | Ju Ho-Seong
• 유승룡(동국대학교 건축공학과 교수) | Yu, Sung-Yong